Blood Brothers Burned Out Chip (Where to find replacement?)

DeimWolf

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Blood Brothers Burned Out Chip (Where to find replacement?)

I received a Blood Brothers PCB this morning and placed it in my machine to test it.

Less than a minute after I started it up, there a loud pop, and the single inline pin chip at position 2A identified as chip U094 (type LA4460N) burned out, blowing a small hole in the package and sending a puff of smoke into the air.

Does anybody know where I might be able to obtain a replacement for this kind of chip? Most of the chips appear to be from Sony or Yamaha.

Note: The chip appears to have something to do with the sound. The game itself appeared to be unaffected, but the sounds went out when the chip blew.

I also have no idea what caused the chip to overheat. It was very hot when it blew.

{{EDIT: A quick search shows that LA4460N is a sound amplifier chip made by SANYO.}}
 
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I can pull one off a board for you.

By chance did you put this in a Neo Geo cabinet? If so you will pop the audio amp chip. Those dedicated cabs are wired for stereo audio and will fry a JAMMA board's audio amp chip.
 
You sure it's bad?

Most Calendar Error messages are because of corroded traces.

RJ
 
Hi. Thanks for the offer Channelmanic. :)

I happened to find a new one on eBay shortly after posting. I was not expecting to find an individual chips like that there.

Of course now I am wondering what caused the chip to burn out. I suspect the board may have touched a mounting screw inside the cabinet and shorted a couple of the pins and overloading the chip. If that is so, then I should not have any troubles once I put the new chip in. If that was not the source of the problem, the new chip may burn out as well.

I guess I will know in a couple of weeks.

By chance did you put this in a Neo Geo cabinet? If so you will pop the audio amp chip. Those dedicated cabs are wired for stereo audio and will fry a JAMMA board's audio amp chip.

The machine I am using is Wired as mono. I have not had any troubles so far with any of the games in it, except Tetris.
 
A little update: It took an entire month before the guy I bought the chip from actually dropped it in the mail, another two weeks for it to finally arrive, and yet another two weeks of it sitting on my desk before I actually got around to installing it, but the LA4460N sound amp chip is finally in my Blood Brothers PCB and the game now sounds great.

Yippie. :D
 
That's great. I just wish it was always that obvious when something goes bad on a pcb. If the bad chip always exploded, this hobby would be more fun.
 
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